MacroMind matchup data — real ranked games, not opinions
Fizz vs Karthus
How often does Fizz beat Karthus in Jungle?
Fizz into Karthus in Jungle: 43% observed win rate across 68 ranked games. Counted from real matches, and every number here shows its sample size.
By 15 minutes the median game has Fizz behind by 115 gold.
Does Fizz counter Karthus?
Too close for a counter call: Fizz sits at 43% over 68 games, inside the noise band. On this sample neither pick counters the other — the swing lives in the conditions below, so play the side you know better.
Beating Karthus: the Fizz game plan
Someone usually dies here around 7:46 in the median game, and level 6 lands near 7:04. Until your spike is online, respect the all-in.
Fizz's Jungle build, with receipts
The most-finished Fizz core is Dusk and Dawn, Nashor's Tooth, Zhonya's Hourglass: 55.6% across 952 games when all three got done. All matchups, patches 16.1-16.12.
Most games start Scorchclaw Pup + Health Potion; the first finished item is usually Dusk and Dawn (3,557 games).
Skill plan: Fizz players max W first and take W at level 1.